Grinding mill



June 3 1924.

H. E. ASBURY GRINDING MILL 2 Sheets-Sheet 1 Filed Dec. 11, 1922 ame 3, 1924. 1,496,613 I H. E. ASBURY GRINDING MILL Filed Dec. 11. 1922 2 Sheets-Sheet 2 MI, W:

Patented June 3, 1924 HARRY E. ASBURY, F MELROSE PARK, PENNSYLVANIA, ASSIGNOR TO THE ENTER- PRISE MANUFACTURING COMPANY OF PENNSYLVANIA, 0'15 PHILADELPHIA, PENN- SYLVANIA, A CORPORATION OF PENNSYLVANIA.

GRINDING MILL.

Application filed. December 11, 1922.

To all LLILOIIL it may canoe/-22:

Be it known that I, HARRY E. Asistnir, a

citizen of the United States, residing in adjust the disks to several different posi tions, thus insuring the proper grinding of the material.

The invention also relates to certain details of construction, which will be fully described hereinafter.

In the accompanying drawii'igsz Fig. 1 is a longitudinal sectional view 'of sufficient of a grinding mill to illustrate my invention Fig. 2 is a sectional view on the line 2-2, Fig. 1;

Fig. 3 is a detached perspective view of the back plate of the mill;

Fig. 4 is a perspective view illustrating details of the adjusting means; and

Fig. 5 is a perspective view illustrating the ball bearing used in connection with the adjusting means.

Referring to the drawings, 1 is the base of the mill on which is mounted a frame 2 to which is attached the back plate 3. 4 is a horizontal shaft connected to the shaft of the electric motor shown by dotted lines 5, which is secured to the flange 6 of the frame 2. 7 is a hopper having a sliding gate 8 for controlling the flow of material to the mill. 9 is a hub splined to the shaft 4.. This hub is in the form of a feed screw for feeding the material from the hopper to the space between the two grinding disks 10 and 11 provided with toothed ribs for grinding the coffee bean, &c.

The disk 10 is secured to the frame 2 and has an opening 12 for the passage of material. The disk 11 is secured to the hub 9 and is mounted between the hub and a disk Serial No. 606,249.

13. Longitudinal screws 14: firmly secure the three parts together. The disk 13 has an extension 15, which has its hearings in the back plate 3. A spring 16 bears against the front end of the hub 9 and tends to force the disk 11 away from the disk 10.

17 is a ball carrier, in which is a series of anti friction' balls 20. The ball carrier is located between washers 18 and 19 in the back plate 3. Back of the washer 19 is a disk 21 having a projection 22 adapted to a groove 23 in the back plate, which prevents the disk turning, yet allows it to move freely in a longitudinal direction.

25 is an adjusting screw, which extends through an opening 26 in the rear of the back plate and bears against the washer 21. Mounted on the screw 25 is a cam disk 27 having a pin 28, which extends into the groove 23 so as to prevent the. disk from turning when the screw is turned. On turning the screw, the disk acts as a nut.

The disk 27, as shown in Fig. 4, has three cam surfaces 29, which are in contact with cam surfaces 30 on a ring 31 mounted back of the disk 27. This ring bears against a washer 32 at the end of the extension of the back plate, as shown clearly in Fig. 1. The opening in the ring 31 is enlarged so as to clear the screw 25. Secured to the ring 31 is a headed screw 33, which extends through a slot 34 in the extension of the back plate, as shown in Fig. 3. On this screw is a handle 35. Between the head of the screw and a flange on the handle is a spring 36, which tends to force the conical end 37 of the handle into the enlarged beveled portions 38 of the slot 34 so that the handle will hold the ring in position after adjustment.

When it is desired to adjust the disk 11 in respect to the fixed disk 10, all that is necessary is to raise the handle clear of the enlargement 38 of the slot 34 and move the handle laterally in one of the three positions indicated by the enlargements 38. On releasing the handle, it seats itself in the enlargements and retains the ring in the position in which it is adjusted. This move-- ment causes the cam surface 30 of the ring to move on the cam surface 29 of the disk 27, moving the disk longitudinally. As the disk bears upon the end of'the hub carrying the grinding disk 11, it will alter the position of the disk 11 in respect to the disk 10.

In grinding coffee, three grades arensually required, but it will be understood that the cam ring 31 may be set in any position. The handle 35 may be modified without departing from the essential features of the invention.

I claim:

1. The combination in a mill, of a casing; a fixed disk secured to the casing; a shaft extending part way through the casing; a disk mounted on the shaft and capable of being turned with the shaft but longitudinally adjustable thereon; a cam ring in the casing beyond the end of the shaft; a cam disk arranged face to face with the cam ring; means for preventing the rotation of the disk, but allowing it to move longitudinally to adjustthe movable disk on its shaft; and means for turning and locking the cam ring in the position to which it is adjusted.

2. The combination in a. mill, of a casing; a grinding disk secured to the casing; a shaft; a hub on the shaft; means for connecting the hub with the shaft so that it can slide longitudinally thereon and will turn with the shaft; a grinding disk secured to the hub; a back plate; a disk mounted in the back plate in line with the hub; a screw bearing against the back plate; a disk mounted on the screw; means for preventing the disk from turning, said disk having a cam surface; a ring having a cam surface bearing upon the cam surface of the disk; and a handle attached to the disk, the back plate being slotted for the passage of the handle, said handle having a movable portion provided with an extension, the slot in the back plate being enlarged at intervals for the reception of the enlargement of the handle so as to lock the disk in position after adjustment.

3. The combination in a mill, of a casing; a fixed grinding disk secured to the casing; a longitudinal shaft; a hub on the shaft; a grinding disk secured to the hub; a back plate having an extension; a ball carrier mounted in the extension; a disk on each side of the carrier, one disk bearing against the hub; a non-rotatable disk bearing against the other disk; a screw bearing against the last mentioned disk; a cam disk threaded for the reception of the screw; means for preventing the cam disk from turning, but allowing it to move longitudinally; a cam ring mounted back of the cam disk and held from longitudinal movement by the rear of the back plate; a screw se cured to the ring, the back plate having a slot through which the screw extends; and a. spring-pressed handle mounted on the screw, the walls of the slot being recessed to receive the end of the handle so as to lock the ring in the position in which is is adjusted.

HARRY E. ASBURY. 

